SMOKING AND ULCERATIVE-COLITIS
SMOKING AND ULCERATIVE-COLITIS
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DOI:
10.1136/bmj.288.6419.751
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发表时间:
1984-01-01
影响因子:
105.7
通讯作者:
LANGMAN, MJS
中科院分区:
文献类型:
--
作者:
LOGAN, RFA;EDMOND, M;LANGMAN, MJS
In a case-control study of smoking and ulcerative colitis patients with the disease were less likely to smoke than community controls matched for age and sex. The difference was substantial, with an estimated relative risk of 3.8 for nonsmoking or current habits, was even larger (6.2) when habits at onset of the disease were examined and was mainly accounted for by 42 of 55 patients who had given up smoking a mean of 8 yr before onset. The association could not be explained by confounding by social class. These findings suggested that smoking directly or indirectly confered protection against ulcerative colitis.